Thèse de doctorat : Università della Svizzera italiana, 2005 ; 2005ECO005.
This Thesis is structured in two Chapters, each aimed at contributing to the existing literature by exploring the effects of ambiguity aversion on two classical equilibrium asset pricing problems: the term structure of interest rates and two-agents equilibrium. In both cases, ambiguity aversion is modeled by means of a Max-Min expected utility representation that falls within the Recursive...
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Thèse de doctorat : Università della Svizzera italiana, 2009 ; 2009ECO004.
The thesis consists of three chapters. In the first chapter we characterize the robustness of subsampling procedures by deriving a general formula for the breakdown point of subsampling quantiles. This breakdown point can be very low for moderate subsampling block sizes, which implies the fragility of subsampling procedures, even if they are applied to robust statistics. This instability...
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Thèse de doctorat : Università della Svizzera italiana, 2006 ; 2006ECO004.
It is well known that a state of prior ignorance is not compatible with learning, at least in a coherent theory of (epistemic) uncertainty. What is less widely known, is that there is another state of beliefs, called near-ignorance, that resembles ignorance very closely by satisfying some principles that can arguably be regarded as necessary in a state of ignorance, and that allows learning to...
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